Image coding/decoding method and apparatus therefor
AssigneeLG Electronics Inc.
InventorsHyeongmoon Jang, Junghak Nam
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Abstract
The present invention discloses an image coding/decoding method and an apparatus for the method. More specifically, a method for filtering an image by a decoding apparatus comprises deriving boundaries of a block divided into quad-tree plus binary-tree structure; determining an edge among boundaries of the block to which de-blocking filtering is applied; determining a type of de-blocking filtering to be applied to the edge; and performing de-blocking filtering to a picture sample restored according to the de-blocking filtering type, wherein the edge or the type of de-blocking filtering is determined by considering width or height of the block.
Claims20
A method for filtering an image by a decoding apparatus, the method comprising:
- determining an edge among boundaries of a block for using a de-blocking filter;
- determining a type of the de-blocking filter for the determined edge based on width or height of the block;
- and
- performing de-blocking filtering on a reconstructed picture sample based on the type of the de-blocking filter,
- wherein based on a chroma block being an intra prediction block, the edge for using the de-blocking filter and the type of the de-blocking filter are determined for the chroma block, and
- wherein the type of the de-blocking filter is determined based on pixels of the block before the de-blocking filter is used.
A decoding apparatus for filtering an image, the decoding apparatus comprising:
- an edge determining unit for determining an edge among boundaries of a block for using a de-blocking filter;
- a filtering type determining unit for determining a type of the de-blocking filter for the determined edge based on width or height of the block;
- and
- a filtering unit for performing de-blocking filtering on a reconstructed picture sample based on the type of the de-blocking filter,
- wherein based on a chroma block being an intra prediction block, the edge for using the de-blocking filter and the type of the de-blocking filter are determined for the chroma block, and
- wherein the type of the de-blocking filter is determined based on pixels of the block before the de-blocking filter is used.
Dependencies are inferred from the claim text.